Belt-guiding means



W. F. GRUPE.

BELT GDUIDING MEANS: APPLICATION FILED MAY 31, 1919.

1,391, 184, PatentedSe/pt. 20, 1921.

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UNITED STATES P TENT OFFICE Gnornor Henson HEIGHTSLINETQ'T, JEizsnY, assronon ro muss- BELT-GUIDING 1 1,391,184. 3 7 1 Application illed' i y 31,

To all whom itmay concern:

Be itknown that I,'WILLIAM F. GRUP a citizen of the United States of America, residing at Hudson Heights, county of Bergemstate of New J ersey, have invented certain new and useful Improvements in Belt-Guiding Means, of which the follow ing is a specification.

This invention relates to guiding means for belts.- Heretofore guiding means have been .provided for guiding a belt by frictional'engagement with the edges of the belt, but such guiding means causes considerable wear of the edges of the belt, and materially reduces the eflectivelife of the belt, particularly for belts for' cigarettemaking machines and-the like.

In accordance with this invention, the

- guiding means comprises rotary members constructed and arranged to engage the belt at spaced portions disposed remote from the edges of-the belt wherebythe extent of wear is reduced, and the belt effectively guided without contact with theedges.

In the most preferred form of the invention, the guiding means comprises spaced rotary members having their effective guid- Figure 1 is a detail perspective view of one form of the invention;

Fig. 2 is a front elevation of the same, partly in section, on a somewhat enlarged scale Fig. 3 is an end elevation of Fig- 2; .and

Fig. 4 is a detail perspective view of a modification; Fig. '5 is a partial end view of Fig. 4.

Referring to the drawings, the guiding 7 means comprises a base 1, on which are mounted the angularly arranged, oppositely disposed rotary members 2, 3, carried by said base 1 by means of the axis pins 4. In the embodiment shown, each rotary member .2, 3, is cylindrical, although the exterior face of the same may be varied as may be desired; in Fig.4 I have shown a modification embodying curved roller faces 2, 3

Preferably, each rotary member 2, 3, is

Specification of Letters Patent. Pat nted t,

1919.]seri 1 N0. 300,930. p f

mounted on rollerbearings 5, 6, dis osed respectively at the bottom and at thetop of the axis pin 4, and held in position by means of the cap 7, secured by means "of a screw 8 to the axis pin The base 1 may beprovided with the an gular faces 9,-10 determining the angle of convergence ofthe rotary members 2,13.

The base .1 is provided with a' suitable slot 11 forthe reception of a suitable bracket 12, for carrying the base 1 from the'body of a .machine or like fixed support. Preferably,

the base 1 is provided with suitable means for adjusting-the position of the same rela tive to the bracket 12, and inthe specific form shown in the drawings, 11 have pro- I vided the adjusting nut 13 loosely mounted within the opening 14 and extending within the recess 11 and provided withthe knurled head 15; its threaded portion '16-is received within the threaded opening 17 of the bracket 12. After attainment of pro er 0- sitionfof the base 1 relative toithe rac et 12, the bracket 12 may be "finally set by means'of the set screw 18 projecting through a lateral-side of the base land extending into the recess 11 'sufiiciently to frictionally bind the bracket 12. I

' In the-operationjof my invention, the beltsuch as a belt 18 of a cigarette making maf.

chine, is received between the converging rotary members 2, 3, as indicated in Figs. 1

.and'2, and 4, said rotary members 2, 3 be ing effectively spaced from one another to cause the belt 18 to be curved at its oppositely disposed interior portions 19, 20,

whereby the regions of engagementofthe respective rotary members 2, 3, withthe belt I 3 18 is at a distance from the respective vedges 21, 22 of the belt. Similarly, for the construction. of Fig. 4, wherein the curved faces 2*, 3 perform their combined guiding func-. tion with a relatively lesser curving effect of the belt 1. Accordingly, the force required for guiding the belt 18 and exerted by means of the respective rotary members 2, 3, is distributed over a relatively large area of the belt, as compared with the edges proper 21, 22 with the belt 18*, as obtains in heretofore proposed arrangements, and the resultant of such forces exerted in the guiding of the belt is directed over portions of the belt which is formed of arelatively great number of warp and weft strands of threads.

r axesyiofi the guiding rollers are-disposed at lesser. angular relation, and may bevsubstantially parallehif desired, jac cording to 3 the curve or curvature of the-roller faces and V the rollers is the effective spacing between the roller faces.

The spacing between the efiective faces of 25, and receiving the threaded portionof the adjusting-screw 30, provided with the knurledfhead 31 .whereby the spacingbe tween the guide roller 3? is regulatable with res ect to the guide roller 2,

he invention is applicable belts employed for general use, but is particularly applicable for fabric belts, and is especially. advantageousfor fabricbelts having a relatively larger, number of' warp threads for, the portion of the belt disposed adjustable, "without regulating the special relation'between the rollers 2, 3, for varying widths of belts within certain range of' spectively entitled more or less central of. the belt, such as is disclosed in my co ending application re-.

R 'ovenfabric, Serial No. 213,627, filed Jan. 23, 11918, and Cigarette conveyor band, Serial No. 137 ,949, filed December 20, 1916. c

I will'be noted that the invention issel fwidths,- the wider belts'engaging therollers over'greater-effective areas of contact than "the-narrow belts. f v I Whereas I have described my 1nvention by reference tospecific forms thereof, it will beunderstood that many changes and modi-' ficationslmay be made without departing from the spirit of the invention, as defined by the appended: claims;

,I claim; j V

1. The combination of a substantially flat belt and means for 'diverting'the path of 3 travel of, said belt at any given single location to provide for the travel of the belt in determined by the width of for guiding members relative to said belt..

fiat. Position anteriorly I an .iposteriorily of said given single location, said diverting means comprising "a; plurality of guiding members disposed oppositely one another and laterally of the belt and immediately adjacent said given single location, said guiding faces exv guiding members having tending at an angle to one another t 2. -The combination of a substantially flat belt and means for diverting'the path of 7 travel of said belt at any given single location; to. provide for the travel of the beltyin flat position anteriorlyxand posteriorly of said given single location, said diverting means comprising a plurality ofrelatively' movably mounted guiding membersdisposed oppositely one anotherand laterally of the belt and immediately adjacent said given single location, said guiding members hav-V ing guiding facesextendlng at an-angle to g v 7 one another.

The cOmbinatiQnJof a substantially flat v belt and means-for diverting the path of travel of said belt at any given single location to provide' fgor the travel of the belt-in flat positionanteriorly and posteriorly of" said givensingle location, saiddiverting' means comprising a pair of guiding members arranged oppositely to one another and laterally of the beltand immediately adjacent said given single location, said guiding members having guiding faces extending atan angle :to one another. 7

4. The combination of a substantially flat belt and means for diverting the path of travel of said. belt at any giv'ensingle location to provide for the travel of the belt in the fiat position anteriorly and posteriorly of said given single location, said diverting means comprising .a pair of guiding members arranged oppositelyto one another and V laterally of the belt, anterior means for mounting said pair of guiding members ladjacenn said given single location, said guiding members having guiding faces extendlng at an angle to' one another, and

adjustable means for said mounting-means for ad ust1ng the positlons of s aid guiding In testimony whereof I have signed specification this 26th day of May,1 919;" r VILLIAM F. GRUPE. 

